From 7b8240cec6c0925a98937c8b22cfbede68e17e28 Mon Sep 17 00:00:00 2001
From: Sasha Koshka <sashakoshka@tebibyte.media>
Date: Sat, 21 Jun 2025 19:26:15 -0400
Subject: [PATCH] tape: Add tag functions to the encoder

---
 tape/decode.go | 7 +++++++
 tape/encode.go | 5 +++++
 2 files changed, 12 insertions(+)

diff --git a/tape/decode.go b/tape/decode.go
index bcf3fd1..990418b 100644
--- a/tape/decode.go
+++ b/tape/decode.go
@@ -140,3 +140,10 @@ func (this *Decoder) ReadFloat64() (value float64, n int, err error) {
 	n += nn; if err != nil { return 0, n, err }
 	return math.Float64frombits(bits), n, nil
 }
+
+// ReadTag decodes a [Tag] from the input reader.
+func (this *Decoder) ReadTag() (value Tag, n int, err error) {
+	uncasted, nn, err := this.ReadUint8()
+	n += nn; if err != nil { return 0, n, err }
+	return Tag(uncasted), n, nil
+}
diff --git a/tape/encode.go b/tape/encode.go
index b84c70f..878697a 100644
--- a/tape/encode.go
+++ b/tape/encode.go
@@ -129,3 +129,8 @@ func (this *Encoder) WriteFloat32(value float32) (n int, err error) {
 func (this *Encoder) WriteFloat64(value float64) (n int, err error) {
 	return this.WriteUint64(math.Float64bits(value))
 }
+
+// WriteTag encodes a [Tag] to the output writer.
+func (this *Encoder) WriteTag(value Tag) (n int, err error) {
+	return this.WriteUint8(uint8(value))
+}